Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 76.6°F (24.8°C) to a pleasant 69.8°F (21°C). Throughout the nights in September, Addison experiences an average low-temperature of 49.8°F (9.9°C).Humidity
In September, the average relative humidity is 81%.Rainfall
In September, in Addison, the rain falls for 13.7 days. Throughout September, 2.13" (54mm) of precipitation is accumulated. In Addison, during the entire year, the rain falls for 176.1 days and collects up to 28.74" (730mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:51 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Take precautions - Protection against sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Addison?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Addison have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Addison have in September?
What is the UV index intensity in September?
Average temperature in September
Addison, NY
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Addison, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Addison, NY
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Addison, NY
- Average humidity in September: 81%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May and June (78%).
Average rainfall in September
Addison, NY
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in September
Addison, NY
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Addison, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Addison, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Addison, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 12min).
Average sunshine days in September
Addison, NY
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in September
Addison, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Addison, NY
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
Addison, NY
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Addison, New York, USA
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